# pHCalculation vs Potentiometric Titration

The clearest difference is in-app purchases: Potentiometric Titration at none against pHCalculation's 5. Potentiometric Titration also leads on device support (4 vs 2) and iOS requirement (15.0 vs 18.6). pHCalculation's advantage is update cadence (every 5 days vs every 6 weeks). On price and ads there is nothing between them.

Both are free to download. pHCalculation sells 5 one-off in-app purchases. Potentiometric Titration asks for nothing beyond the download.

pHCalculation ships an update every 5 days, Potentiometric Titration every 6 weeks. The most recent releases landed on September 23, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | pHCalculation | Potentiometric Titration |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 6 weeks |
| Size | 2 MB | 119 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Jatuphol Jaturapat](https://appshunter.io/developer/1788860463) | [Oleksandr Rubtsov](https://appshunter.io/developer/1823549572) |

## What reviewers say

### pHCalculation

[App page](https://appshunter.io/ios/app/phcalculation/id6743737030)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Show solution | $0.99 | one-time |
| Buffer Calculator | $0.99 | one-time |
| Salt pH calculator | $0.99 | one-time |
| Reverse pH calculator | $0.99 | one-time |
| Unlock All Features. | $1.99 | one-time |


### Potentiometric Titration

[App page](https://appshunter.io/ios/app/potentiometric-titration/id6747953387)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is pHCalculation free?

pHCalculation is free to download, with in-app purchases available.

### Is Potentiometric Titration free?

Potentiometric Titration is free to download, with no in-app purchases.

### Do pHCalculation or Potentiometric Titration have ads?

Neither pHCalculation nor Potentiometric Titration shows ads.

### Which is updated more often, pHCalculation or Potentiometric Titration?

pHCalculation ships an update every 5 days, and Potentiometric Titration every 6 weeks. Most recently, pHCalculation was updated on September 23, 2026 and Potentiometric Titration on September 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*